Patent GB-962278-A (GB)
Title: Process for dyeing textile materials
IPC: D06P3/72
Filed: 1962-03-14
Abstract: Polyethers used as textile dyeing assistants contain polyethylene glycol radicals as chain members repeatedly alternating with radicals having not less than five carbon atoms directly linked with one another.  The polyethers are preferably soluble in water to an extent of at least 1% by weight and they may be condensation products obtainable, on the one hand from polyethylene glycols, ethoxylated di- and poly-alcohols, ethoxylated di- and poly-phenols, ethoxylated mono- and poly-amines or ethoxylated di- and poly-carboxylic acids, and on the other hand from aliphatic, cycloaliphatic or aromatic dicarboxylic acids, thiodiglycol or other b , b 1-dihydroxy-alkyl sulphides.  In addition suitable polyethers may be poly-addition products of polyethylene glycols or of ethoxylation products of the aforesaid kind and di- or polyisocyanates, e.g. hexamethylene-diisocyanate, 4, 41-toluylene-diisocyanate, 4, 41-diisocyanate-diphenylmethane, 4, 41-diisocyanato-dicyclohexylmethane, o , o 1-diisocyanato-xylene or divinylsulphones.  Mixed polymerisates are also useful which are obtainable from ethylene oxide, and cyclohexeneoxide or styrene oxide, optionally with the addition of propylene oxide, as well as mixed polymerizates obtainable from ethylene oxide and phenylglycide ether, cresyl-glycide ether, methoxyphenyl-glycide ether of p- or m-phenylene-diglycide ether or especially polyethers obtained from the ethoxylation products of diphenols, e.g. resorcinol, hydroquinone, 4, 41-dihydroxy-diphenylmethane, 4, 41-dihydroxy-diphenylpropane and 4, 41-dihydroxy-diphenyl sulphone. In the examples (1) ethoxylated resorcinol of mol. wt. 1100 is condensed with thiodiglycol in the presence of phosphoric acid, (3) a mixture of (1) and the condensation product of octaethylene glycol and dimethylol urea (mol. ratio 2:1) is employed, (4) divinyl sulphone is reacted with ethoxylated resorcinol of mol. wt. 1250, (5) ethoxylated resorcinol of mol. wt. 1300 is reacted with hexamethylene diisocyanate, (6) sulphide group-containing polyether (1) is oxidized to a sulphoxide group-containing polyether with 1 mol. H2O2 per mol. thiodiglycol contained in (1), (7) ethoxylated resorcinol of mol. wt. 1700 is condensed with di-(b -hydroxypropyl)-sulphide in mol. ratio 1:3 until a mol. wt. of 6400 is attained, (8) ethoxylated N-methyl-ethanolamine of mol. wt. 1000 is heated with hexamethylene diisocyanate in a mol. ratio 100:92 and also ethoxylated N-butyl-diethanolamine of mol. wt. 1200 is heated with sebacic acid until a mol. wt. of 5000 is attained. Specifications 787,379 and 896,999 are referred to.ALSO:Textile materials of polymers and copolymers of acrylonitrile, polyamides, polyurethanes, aromatic polyesters or cellulose esters (including triacetate and butyrate) and also mixed fabrics of synthetic fibres with wool or cotton are printed or padded with an aqueous solution or suspension of a dyestuff and also a polyether containing polyethylene glycol radicals as chain members repeatedly alternating with radicals having not less than five carbon atoms directly linked with one another and the dyeings or prints are fixed by heating.  The polyethers are preferably soluble in water to an extent of at least 1% by weight and they may be condensation products obtainable, on the one hand from polyethylene glycols, ethoxylated di- and poly-alcohols, ethoxylated di- and poly-phenols, ethoxylated mono-and poly-amines or ethoxylated di- and poly-carboxylic acids, and on the other hand from aliphatic, cycloaliphatic or aromatic dicarboxylic acids, thiodiglycol or other b , b 1-dihydroxyalkyl sulphides.  In addition suitable polyethers may be poly-addition products of polyethylene glycols or of ethoxylation products of the aforesaid kind and di- or poly-isocyanates, e.g, hexamethylene-diisocyanato, 4, 41-toluylene-diisocyanate, 4, 41-diisocyanato-diphenyl-methane, 4, 41-diisocyanato-dicyclohexylmethane, o , o 1-diisocyanato-xylene or divinylsulphones.  Mixed polymerisates are also useful which are obtainable from ethylene oxide and cyclohexeneoxide or styrene oxide, optionally with the addition of propylene oxide, as well as mixed polymerisates obtainable from ethylene oxide and phenyl-glycide ether, cresyl-glycide ether, methoxy-phenyl-glycide ether or p or m-phenylene-diglycide ether or especially polyethers obtained from the ethoxylation products of diphenols, e.g., resorcinol, hydroquinone, 4, 41-dihydroxy-diphenylmethane, 4, 41-dihydroxy-diphenylpropane and 4, 41-dihydroxy-diphenyl-sulphone. Suitable dyestuff are from the disperse, vat, acid, metal complex or basic dyestuff series. Mixed fabrics may be dyed from one or more baths possibly by inserting an exhaust process step or they may be dyed selectively. The printing pastes or padding liquors preferably contain 0.5-4% by weight of the paste or liquor of polyethers and may also contain softening agents, hydrotropic substances or carriers. Where a polyether is employed which has groups condensable with formaldehyde the dye solution may also contain formaldehyde or compounds splitting off formaldehyde or methylol or methylol ether group-containing compounds whereby an anti-static finish is obtained as well.  Examples are given.  Specifications 787,379 and 896,999 are referred to.